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Guest
I'm not sure what you mean by that? Enter plan mode, input SI, scroll through depths... see the NDLs. Works fine on multiple dives. That basic function, or more, has existed on every dive computer I've used.
None of my computers have the capability to input an SI time but all are older models (Scubapro EDI, Tusa IQ-300?, Oceanic Data +, Oceanic VEO 250). So all NDL's to support dive planning are based on current gas loadings.
I just looked at a more current Oceanic computer and, as with all my older DC's, SI is a computer post-dive output; not a user input that would allow SI to be paramaterized for future dives. What computer(s) are you using?